@Nachiketha i believe he was addressing a night star and wishing he was as steadfast (still, eternally fixed) as it was. not because the star shines in loneliness above the Earth and watches over the seasons but because he (our poet) wishes to remain still in his lover's embrace and forever in love as he is in that particular moment.

i love the poem, and, in fact, this poem explains almost half of my life.this is the best, a man can get! i am seeing a shining star everyday with my parents in my dream and i wish i will sleep forever in this happiness
but unfortunately my mom breaks the dream for school.
(Report)Reply

For anyone who is deeply moved by romantic poetry, there is a movie called Bright Star that is centered on John Keats' love for a woman and their passionate but tragic love for one another. It is a lovely film. I just thought I'd share it since it makes this poem even more moving being used in a film.
(Report)Reply

This is one of the most beautiful poems I've ever read. John Keats so fluidly describes the pain and joy of love, this sweet unrest as not opposing sides but, potential alchemic ingredients which amalgamate and stabilize with the constancy of bright star. To ... live forever or swoon to death is again all the same as a future possibility once one exists consecrated in the heightened state of Universal, Creative, Now, Love. Everything else would only be an apparent change in form not essence as illustrated by Beauty is truth, truth beauty... from Ode to a Grecian Urn but, again once alchemic, they are one and the same.
(Report)Reply